Troubleshooting - Graco 310645H Repair And Parts Manual

Pressure Relief, page 7
Problem
Sprayer won't run or stops intermit-
tently
Pump won't pump material or low
output
Soft start won't work/pump, always
loaded
310645H

Troubleshooting

Cause
Power switch not on
No power at wall outlet
Wrong size generator
Temperature too cold
Too many items on same circuit
Internal thermal switch tripped
Extension cord too long or wrong
gauge
Breaker tripped
Air lock
Mix too thick
Loose fittings
Plugged gun
RotoFlex HD Pump worn out
Pump cold or material frozen in pump Move pump to warm room and allow
Sensor is bad
Check air system for leaks
Loose wire
No air pressure
Sensor is bad
Air leak due to bad seal keeps valve
open
Normal soft start system delay
Switch is not operating properly
Damaged solenoid valve on cylinder
AIr leak
Troubleshooting
Solution
Turn switch on.
Check outlet by plugging in another
appliance. If appliance does not
work, try another outlet.
Use a 7500 watt or larger generator.
Refer to Generator Requirements,
page 8.
Allow unit to warm up.
Unplug other items from circuit.
Self-resetting. Allow unit to cool down
15 minutes and restart. Usually
occurs when wrong size extension
cord is used.
Use a 12 gage extension cord or
remove extension cord. Refer to
Grounding and Electric Require-
ments, page 7.
Reset breaker.
Open air valve on gun.
Add water to thin material. Use Mate-
rial Thickness Gauge.
Check and retighten all fittings.
Relieve Pressure, page 7. Remove
gun from hose. Clean gun.
Replace hose.
it to warm up or run hot water through
sprayer.
Replace, page 26
Remove shroud and examine for air
leaks
Remove shroud and examine wiring
Rebuild compressor
Change sensor, page 26
Replace seal
Release trigger for 10-15 seconds.
Retry.
Replace switch
Check gun supply, hose and sprayer
for leaks
27